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Finding the Fourth Proportional to 5,165.67, 7,128.52 and 2,927.52

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Solution

The fourth proportional to 5,165.67, 7,128.52 and 2,927.52 is: 4,039.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.67 : 7,128.52 = 2,927.52 : x
  2. Step 2: Convert to fraction form
    5,165.67/7,128.52 = 2,927.52/x
  3. Step 3: Cross multiply
    5,165.67x = 7,128.52 × 2,927.52
  4. Step 4: Simplify right side
    5,165.67x = 20,868,884.87
  5. Step 5: Solve for x
    x = 20,868,884.87/5,165.67
  6. Step 6: Final answer
    x = 4,039.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.